LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Runs good until open loop

Old Sep 21, 2004 | 05:29 PM
  #1  
S8ER95Z's Avatar
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From: Quad Cities
Runs good until open loop

Any ideas? The car runs really great (stock tune) when its cold...as soon as it warms up and hits open loop it turns into a dog. Anyway to get around this until I get it tuned??? Thanks in advance.
Old Sep 21, 2004 | 05:34 PM
  #2  
HBHRacing's Avatar
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From: Statesville NC
Re: Runs good until open loop

I belive that you mean that it runs fine intill you hit closed loop. Scanning for 02 readings will help to pinpoint the issue. It could be many of things causing it. a little more history could be helpfull
Old Sep 21, 2004 | 05:46 PM
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S8ER95Z's Avatar
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From: Quad Cities
Re: Runs good until open loop

DOH! Yeah..sorry..im retarded

I dont have a scanner available at the moment (might be able to scan it tomorrow)..

Not much history to the motor... I just put it in and got it running.. I have an exhaust leak where the cat should be... other than that everything is fine that I know of.

Once the car hits closed loop the lope of the cam becomes very apparent and the idle tries to drop to the stock 550rpm level... the SES light trips and the car just stops pulling. When it first starts it has tons of power...idle is around 900rpm and I dont have an SES Light.
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